Water-tube boiler.



PATENTED JAN. 1, 1907.

F. Z. SHERER. WATER TUBE-BOILER. APPLIOATION rump mus, 190s.

'4 SKIRTS-SHEET 1 I PATENTED JAN. 1, 1907.

F. Z; SHERBR.

WATER TUBE BOILER. nrmou'x on IILEDJIAY 2a; 1000.

4 SHEETS-SHEET 3.

' WITNESSES:

I VENTOR n 01mm.

PATENTED JAN. 1, 1907.

w P. z. SHERER. WATER .TUBB BOILER. APPLIOATIQI FILED MAYZS, 1906.

4 SHEETS-SHEET 4.

INVENTOR ATTORNEYS WITNESSES: I

-ruuirnn srArEs PATENT .oinuon.

' FRA K z 'sHEnEit, OF MONTCLAIR, NEW JERSEY.

I Wei-sequel: Bowen; 4'

Specification of Letters Patent.

Patented Jan. 1, 1907.

Application filed May 26,1906- Berial llo. 318,801.

r allwham it r na/y 051m Be it known that I, FRANK Z. SHE-BER, reSldlIlg at Montclair, in the county of Essex I andState of New J ersey,have invented certain new and useful Improvements in Water-- TubeBoilers, of which the following is afull,

clear, and exact descri tion, such as will 'enableothers skilled injt eiart to which itappertains tomake and use thesame. I

My nycnt on relates to steam-generators,

' and .more particularly to steam boilers of the watertube type.

Oneof the objects thereof is to provide a boiler of the abovetypecharacterized by'increased efliciency.

Another, object of my invention is to'provide. a safer andmore reliablewater-tube boiler than has hitherto been constrtucted and one, moreover,that combines economy of -construction, merchandising, and install ingwith a low cost of maintenance.

Other objects will be in part obvious and in art pointed outhereinafter.

he invention accordingly. consists in the features of. construction,combinations of elements, and arrangement of parts, which will beexemplified in the embodiment hereinafter described, and the scope ofthe application of whichwill be indicated in the fol-' lowing claims.

In the accompanying drawingswherein is shown one of t e various possibleembodiments'of my invention, Figure 1 1s a side elevation thereof, someof the parts being shownin section. ,Fig 2 is a front elevation of thesame, with a portion of the fire-front removed, showing headers of thesinuous type and their connections with the front steam and water drum.Fig. 3 is a vertical, sectional view ,of the same, taken on line 3 3Fig. 1. Fig. 4 is a view in perspective of a sinuous form of header thatmay be employed in aboiler constructed in accordance with my invention.Fig. 5 is a view in perspective of ,a box form of header that may beemployed n a boiler-constructed 1n accord-' ance with my invention. Inthis form the holes for the water-tubes are placed on a common center,one directly. above the other,

lardra the staggering of the various-horizontal rows beingaccomplished-by the transverse inelination of the headers placed side byside eon-. secutively.

Similar referenceeharacters refer to simiparts throughout the severalviews of. the tubes or nipples 16 i In order'to provide fora circulationof wawings.

Preliminary to "a description of the struc tural features of 'myinvention and in order to .render certain of the important objectsthereof more intelligible it may here be noted that in the interest ofsafety as Well as to secure minimum cost of maintenanceof'steamgeneratorsv the steam and water should 'be confined in as-m'anyand as small envelops as possible or, in other words, that thegenera-tor should be sectionalized'to the greatest possible extent. Thisis also important from the standpoint of convenience of handling and,moreover, there is .securedby such construction a greater adaptabilityto meet special lflq lilements as to location, 'charac-,

in a simple and efiicient mannerI have shown a preferred adaptation ofmy invention, 1 indicates the usual mason'rybase, which'forms a part ofthe setting of the Referring nowto th drawings,-wherein I 'boiler andwhich supports the front wall 2,

the rear wall 3, the side walls 4, and bridgeridge-wall 5 and extendover the ash-pit 7.

in construction, transportation, and erection,

5 wall 5. Thegrate-bars 6 are suitably sup-.- ported between thefrontwall 2 and the The combustion-chamber of the furnaceis shown "at 8.This particularconstruction of the boiler-setting, however, comprises noessential part of my present invention and I may be modified or changedin various ways to meet special requirements. I

The water-tubes 9 run lengthwise of the furnace and, as shown, aredisposed in stag.-

gered relation in vertical rows, and the sev:

eral tubes constituting each staggered'row are connected in the usualways at their ends with sectional headers 10. The outer walls of thesectional headers are provided with the usual hand-holes 11 forfurnishing access foe to the several water-tubes, saidhan'd-holes beingclosed byhand-hole plates 12, secured in plaee,-with the usual erabs,bybolts 13.

Extending transversely of water-tubes 9,. above the sectional headers 10at either'end' v of the boiler, are steam and water drums-15f I and 15,respectively, which are connected to each of tho sectional'headers bymeans of ter between drums 14 and 15,1 arrange tire series ofwater-tubes 9, connectin drums- 14 and 15, disposed parallel theretotherebetween a series of equalizer pipes or tubes 17, preferably .inoneor-more horizontal rows "Said tubes may be completely submerged orpartly below and partly above the usual water-line in the drums. The.en-

the sectional headers, are inclined towar rear to facilitate the propercirculation of lwate r' therethrough. I

; Located between the steam, andwater '=and having its center atasomewhat higher --dr ums 14 and 15 above the watereline by,

level, is a steam-drum 18, provided with steam-outlet 19. Thissteam-drum is connected with each of the-steam and Water means of pipesor tubes 20, which can be arran ed' in oneor more horizontal rows, accoring to the amount of surface. required, in order to secure the desireddegree of superheatinthe steam, which is conducted by said tubes fromthe steam. and water drums to steanidrflm I18.- I also connect-thelowerportion" of steam-drum 18 with steam and water drum- 1 5 by means or1')ipe'21, thefunction of which pipe is to drain any waterofcondensation which may be present ,in the steam-drum; This pipemayfhowever, be

dispensed with, ifdesired. The roof tilevor' other material, is laidimmediately baffles 23 and 24,.one of which is located im-,

above steam-tubes 20.

While the flue partitions or bafiles to direct the course of the flamesand heated ases can be'arranged in any desired manner,

"preferably provide vertical partitions or mediately behind thegrate-bars and one-be "*outlet 25, or, if desired, the course of thegases traveling upward from the combus- 1 tion-chamber may lead betweenthe vertical 'bank 0 tween that point and the rear ends of the watertubes.- The heated gases from the gratebars 6,fpassing 11 Ward through'theseries or -,wa'ter-tu es 9, sweep down between the vertical baffles 23and 24 into the combustion-chamber 8, whence they pass ,be-

tween vertical baffle 24 and the rearmost series of sectional headers1.0to the smokebaflie 24 and the rear sectional headers to asmoke-outletfllocated between the tubes or nippleswhich connect saidsectional headers tothe rear steam and Water drum, and the smoke-outletmay, if desired, be otherwise located by'means of special provlsion orare rangement of baffling:

Connected with-each of the rear sectional headers 10 by means of tubes26 is a muddrum 27, to which access mac be had; by

means of hand or'man holes 28, normallyclosed by means ofthe usual crabs29 and bolts 30. The boiler, however, may be used, if desired, with orwithout such mud- Suitable orifices are provided in the side the 1 wallsof the masonry structure of the setting ,of the boiler, through whichsoot may be re- It will alsobe understood that the usual safety-valve,Steam and water; gages, 7

moved.

blow-off pipes, and other usual boiler a'coes-f sories may be provided,such accessories not being shown herein, as they comprise no essentialpart of my present invention.

It will accordingly be apparent that I have provided a construction welladapted to attain the several gbjects and en'dsof my invention andthatby reason of such construction great economy in manufacture, assembling,and maintenance is secured. 'The steam and wa= ter drums and thestea1n-drum may be coni their length may-be easily varied so as toaccommodate an-indefinite number of sectional head ers, thus securing alarger range of capacities from single built-up units, and it willbemoreover apparent that by reason; of the large number of independentparts'which are, employed to make up the sectional boiler repair thereofis greatly facilitated, as but a small portion of the whole unit wouldbe I deranged by the breaking of a single part. Another importantadvantage realized in my construction is that .while maintaining thecommon level between the steam and Water loo drums the circulation ofthe water through the boiler may be increased to any-desiredextent bymerely lengthening-the connectingtubes which are extended between therear steam and water drum and the sectional headers arranged thereunderorby shortening the tubes connecting the front series" of sectionalheaders with the steam and water drums arranged thereabove.

As many changes couldbe made in the above construction and manyapparently widely different embodiments of my invention could be madewithout departing from the scopethereof, I intend that all-matter con- Itained in the abovedescription or s'how-nlin ,the'acc-ompanying drawingsshall be i'nterpreted as illustrative-and not 1n a lumtmg sense. Idesire it also to be understood that the language used in the followingclaims'is intended to cover all i of. the generic and specific featuresof the invention herein described and all st'atements'ofthe sco e of theinvention which as a matter of anguage might be said to falltherebetwben.

Havingv described my invention, what I claim as new, and desire tosecure by Letters Patent, is a 1. In a water-tube boiler, thecombination ,TIO

' ter drum above the same, a plurality of drums.

of-'-a"plurality of headers arra ed at either end thereof, a series ofWater-tn es extended between oppositely-disposed headers, a steam andwater drum extending trans- Verseb of said-water-tubes above the same ateither end of the boiler, separate risers connecting said headers withthe steam and waequalizer-tubes connecting said drums, a steam-drumarranged intermediate the steam and water drums, and a plurality oftubes arran edabove the Water-line for connecting sai drum with one ofsaid steam and water 2/ In awater-tube boiler, the combination I of aseries of water-tubes disposed in staggered vertical rows, a pluralityof sinuous sectional headers, one of said headers bein arranged ateither end of each row of sai extend, a steam and water drum extendingcrosswise of said water-tubes at either end of v the boiler; a tube orriser extending between each of said sinuous headers and the steam andwater drum above thesame, equalizertubes extended in one or morehorizontal rows between said steam and water drums,

steam and water drums, and a plurality. of tubes extended between saidsteam-drum and said steam and'water drums, said tubes being arrangedabove the water-line.

In testimony whereof I affix my signature in the presence of twowitnesses.

v FRANK Z. SHERER. Witnesses:

C. H. WILsoN, H. M. Siainmmsi a steam-drum located intermediate the

